Data analysis For interpreting the results, visual inspection will be primarily used to determine the effectiveness of the TBR Neurofeedback training. If TBR in group A reduces after the introduction of the real Neurofeedback training compared to no changes in group C, the experiment provides compelling evidence for the effectiveness of the Neurofeedback training. The effect will be even more strongly supported if we see a similar reduction after Neurofeedback training onset in group A and B (as in after an equal number of actual NFT sessions as in group A, regardless the longer duration of the baseline). These changes after onset in group A and group B are assumed to be absent in group C, where we expect no changes at all. The expected effect in group B can also be considered as a direct replication of the effect in group A. The idealized expected changes in TBR are depicted in Figure 3 (each individual line represents changes in TBR per group). These visual inspections serve as testing of the primary outcome measures.